125 lines
3.2 KiB
C++
125 lines
3.2 KiB
C++
/**
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* @file llrandom_test.cpp
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* @author Phoenix
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* @date 2007-01-25
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*
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* $LicenseInfo:firstyear=2007&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#include "linden_common.h"
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#include "../test/lltut.h"
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#include "../llrand.h"
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#include "stringize.h"
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// In llrand.h, every function is documented to return less than the high end
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// -- specifically, because you can pass a negative extent, they're documented
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// never to return a value equal to the extent.
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// So that we don't need two different versions of ensure_in_range(), when
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// testing extent < 0, negate the return value and the extent before passing
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// into ensure_in_range().
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template <typename NUMBER>
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void ensure_in_range(const std::string_view& name,
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NUMBER value, NUMBER low, NUMBER high)
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{
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auto failmsg{ stringize(name, " >= ", low, " (", value, ')') };
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tut::ensure(failmsg, (value >= low));
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failmsg = stringize(name, " < ", high, " (", value, ')');
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tut::ensure(failmsg, (value < high));
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}
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namespace tut
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{
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struct random
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{
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};
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typedef test_group<random> random_t;
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typedef random_t::object random_object_t;
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tut::random_t tut_random("LLSeedRand");
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template<> template<>
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void random_object_t::test<1>()
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{
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for(S32 ii = 0; ii < 100000; ++ii)
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{
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ensure_in_range("frand", ll_frand(), 0.0f, 1.0f);
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}
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}
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template<> template<>
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void random_object_t::test<2>()
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{
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for(S32 ii = 0; ii < 100000; ++ii)
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{
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ensure_in_range("drand", ll_drand(), 0.0, 1.0);
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}
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}
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template<> template<>
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void random_object_t::test<3>()
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{
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for(S32 ii = 0; ii < 100000; ++ii)
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{
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ensure_in_range("frand(2.0f)", ll_frand(2.0f) - 1.0f, -1.0f, 1.0f);
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}
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}
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template<> template<>
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void random_object_t::test<4>()
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{
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for(S32 ii = 0; ii < 100000; ++ii)
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{
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// Negate the result so we don't have to allow a templated low-end
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// comparison as well.
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ensure_in_range("-frand(-7.0)", -ll_frand(-7.0), 0.0f, 7.0f);
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}
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}
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template<> template<>
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void random_object_t::test<5>()
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{
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for(S32 ii = 0; ii < 100000; ++ii)
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{
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ensure_in_range("-drand(-2.0)", -ll_drand(-2.0), 0.0, 2.0);
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}
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}
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template<> template<>
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void random_object_t::test<6>()
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{
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for(S32 ii = 0; ii < 100000; ++ii)
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{
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ensure_in_range("rand(100)", ll_rand(100), 0, 100);
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}
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}
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template<> template<>
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void random_object_t::test<7>()
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{
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for(S32 ii = 0; ii < 100000; ++ii)
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{
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ensure_in_range("-rand(-127)", -ll_rand(-127), 0, 127);
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}
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}
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}
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